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Bouteiller L, Colombani O, Lortie F, et al. Thickness transition of a rigid supramolecular polymer. J Am Chem Soc. 2005;127(24):8893-8doi: 10.1021/ja0511016.
Bouteiller, L., Colombani, O., Lortie, F., & Terech, P. (2005). Thickness transition of a rigid supramolecular polymer. Journal of the American Chemical Society, 127(24), 8893-8. https://doi.org/10.1021/ja0511016
Bouteiller, Laurent, et al. "Thickness transition of a rigid supramolecular polymer." Journal of the American Chemical Society vol. 127,24 (2005): 8893-8. doi: https://doi.org/10.1021/ja0511016
Bouteiller L, Colombani O, Lortie F, Terech P. Thickness transition of a rigid supramolecular polymer. J Am Chem Soc. 2005 Jun 22;127(24):8893-8. doi: 10.1021/ja0511016. PMID: 15954798.
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J Am Chem Soc. 2005 Jun 22;127(24):8893-8. doi: 10.1021/ja0511016.

Thickness transition of a rigid supramolecular polymer.

Journal of the American Chemical Society

Laurent Bouteiller, Olivier Colombani, Frédéric Lortie, Pierre Terech

Affiliations

  1. Laboratoire de Chimie des Polymères, UMR 7610, CNRS, Université Pierre et Marie Curie, 4 place Jussieu, 75252 Paris Cedex 05, France. [email protected]

PMID: 15954798 DOI: 10.1021/ja0511016

Abstract

A low molecular weight bisurea in nonpolar solvents is shown to self-assemble by hydrogen bonding into two distinct high molecular weight structures. At low temperature and high concentration, the most stable structure is a thick cylindrical assembly, responsible for the very high viscosity of the solution. At higher temperature or lower concentration, the thick filaments disappear in favor of thinner filaments, leading to a lower viscosity. The reversible transition occurs over a temperature range of 5 degrees C only, showing that it is highly cooperative. The structural switch can also be triggered by changing the nature of the solvent or the composition in the case of a mixture of two bisureas. The high cooperativity and the tunability of this transition are useful for the design of responsive materials.

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